<template>
  <div class="sidebar">
 

    <el-menu
      class="sidebar-el-menu"
      :default-active="onRoutes"
      :collapse="collapse"
      text-color="#4396ca"
      active-text-color="#20a0ff"
      unique-opened
      router
    >
      <template v-for="item in items">
        <template v-if="item.subs">
          <el-submenu :index="item.index" :key="item.index">
            <template slot="title">
              <i :class="item.icon"></i>
              <span slot="title">{{ item.title }}</span>
            </template>
            <template v-for="subItem in item.subs">
              <el-submenu
                v-if="subItem.subs"
                :index="subItem.index"
                :key="subItem.index"
              >
                <template slot="title">{{ subItem.title }}</template>
                <el-menu-item
                  v-for="(threeItem, i) in subItem.subs"
                  :key="i"
                  :index="threeItem.index"
                  >{{ threeItem.title }}</el-menu-item
                >
              </el-submenu>
              <el-menu-item
                v-else
                :index="subItem.index"
                :key="subItem.index"
                >{{ subItem.title }}</el-menu-item
              >
            </template>
          </el-submenu>
        </template>
        <template v-else>
          <el-menu-item :index="item.index" :key="item.index">
            <i :class="item.icon"></i>
            <span slot="title">{{ item.title }}</span>
          </el-menu-item>
        </template>
      </template>
    </el-menu>
  </div>
</template>

<script>
import bus from "../common/bus";
export default {
  data() {
    return {
      collapse: false,
      items: [],
      myuser: {},
    };
  },
  mounted() {},
  computed: {
    onRoutes() {
      return this.$route.path.replace("/", "");
    },
  },
  created() {
    // 通过 Event Bus 进行组件间通信，来折叠侧边栏
    bus.$on("collapse", (msg) => {
      this.collapse = msg;
    });

    var myuser = JSON.parse(localStorage.getItem("myuser"));
    this.myuser = myuser;
    this.items = [
      {
        icon: "el-icon-lx-copy",
        index: "System",
        title: "系统管理",
        subs: [
          {
            icon: "el-icon-lx-copy",
            index: "role",
            title: "角色管理",
          },
          {
            icon: "el-icon-lx-copy",
            index: "menu",
            title: "菜单管理",
          },
          {
            icon: "el-icon-lx-copy",
            index: "config",
            title: "系统配置",
          },
          {
            icon: "el-icon-lx-copy",
            index: "manage",
            title: "用户管理",
          },
        ],
      },
    ];
  },
};
</script>

<style scoped>
.user {
  display: block;
  position: absolute;

  top: 3px;
  bottom: 0;
  margin: 0px auto;
  text-align: center;
  left: 50%;
  transform: translateX(-50%);
}
.sidebar {
  display: block;
  position: absolute;
  left: 0;
  top: 70px;
  bottom: 0;
 

}
.el-menu {
  background-color: transparent;
}
.sidebar::-webkit-scrollbar {
  width: 0;
}
.sidebar-el-menu:not(.el-menu--collapse) {
  width: 250px;
}
.sidebar-el-menu li {
  background-color: #edf9ff;
  margin-top: 5px;
}
.sidebar > ul {
  height: 100%;
}
</style>
